About Hanlon Drilling Services
Hanlon Drilling Inc. is a Northern California-based geotechnical drilling contractor that holds a California C-57 Well Driller’s License and operates in full compliance with applicable regulatory and industry standards.
We provide reliable, high-quality subsurface exploration, geotechnical investigation, and environmental testing services to engineering and environmental consulting firms. The company was founded on a commitment to integrity, hard work, safety, and delivering accurate field data that supports sound engineering decisions.
At Hanlon Drilling, we believe every project deserves a personalized approach. We work closely with our clients to understand their unique objectives and provide the most effective and efficient drilling solutions to achieve their desired goals. Our hands-on communication style, passion for the industry, and unwavering attention to detail ensure clients receive accurate, real-time geological information throughout the drilling process, allowing for informed decision-making and dependable project outcomes.
Our Capabilities
Our capabilities are supported by a versatile fleet of drilling equipment, including a CME 75 truck-mounted drill rig and a CME 55 track-mounted drill rig, allowing us to efficiently access and operate in a wide variety of site conditions and terrain. These rigs are equipped to perform solid stem auger, hollow stem auger, and rotary wash drilling for both shallow and deep subsurface investigations. Our equipment includes a Bean high-pressure pump and a calibrated 140lb automatic drop hammer, ensuring consistent blow counts and reliable sampling results. Hanlon Drilling offers a comprehensive range of geotechnical and environmental services, including:
- Geotechnical sampling
- Shelby tube sampling
- Monitoring well installation
- Vibrating wire piezometer installation
- Inclinometer installation
- Percolation testing
- Test Pits
- Environmental sampling and investigations
- Groundwater monitoring systems
- Soil and groundwater sampling
- And many other specialized drilling and testing services
Our Experience
Our experienced personnel are dedicated to completing projects on schedule while maintaining the highest standards of workmanship, data quality, and professionalism. We take pride in providing ongoing geological observations and clear communication throughout every phase of drilling, ensuring clients remain informed and confident in the quality of the data collected.
As a trusted drilling subcontractor, we strive to build long-term partnerships through dependable service, skilled field crews, clear communication, and results our clients can rely on.
Health & Safety Commitment
At Hanlon Drilling, safety is the foundation of everything we do. While we approach every project with experience, professionalism, and pride, the health and safety of our employees, clients, and the public remain our highest priority. Regardless of a project’s size, complexity, or schedule demands, our primary goal is to ensure that everyone returns home safely at the end of each workday. We are committed to maintaining a strong safety culture through ongoing training, hazard awareness, and strict adherence to industry best practices. Our field personnel maintain current OSHA HAZWOPER 40-Hour training and complete the required 8-Hour Annual Refresher Training to ensure compliance with applicable regulations and to stay current on safe work practices. In addition, our crews follow established safety procedures, conduct regular safety meetings, and continuously evaluate site conditions to identify and mitigate potential hazards. By prioritizing safety in every aspect of our operations, Hanlon Drilling delivers reliable drilling services while protecting our employees, clients, and the communities where we work.
Hanlon Drilling specializes in geotechnical and environmental testing services.